Rotary pump



K. DQSIVIITH AND B. SAIVIELSON/v ROTARY Pun/IP.

APPLICATION FILED JUNEZ, 191-9.

' 15,328,061, A l Patented Jan.13,1920.

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/far/ o, 0mm/a, Same/S021 UNrrED sTAgE- sgrnivtr OFFICE.

,KARL D. SMITH, F BATTLE CREEK, MICHIGAN, AND BERNARD SAMELSON, OF NEWYORK, N. Y., ASSIGNOBS MICHIGAN.

TO UNION STEAI/lv PUMP COMPANY, OF BATTLE CREEK,

ROTARY PUMP.

n To all whom t may concern:

' v Y Beit known that we, KARL D. SMITH and BERNARD SAMELsoN, citizensof the United States, residing at Battle Creek, count of Calhoun, and4State of Michigan, an at 'New Yorkcity, State of New York,respectively, have invented certain new and useful Improvements inRotary Pumps, of lwhich the following is a'speciiication.

This invention relates to improvements in rotary pumps,

' The main object of our invention is to provide an improved rotary pumpwell .adapted for the pumping of milk which does not have a churningaction on the milk, is of large capacity, and a structure which facili-Itates ready cleaning. v

Furtherobjects, and objects relating to structural f details, willdeiinitel appear 420 yfrom the detailed descri tion to fo low.

We 'accomplish the o' jects of our inven- Jtionby the devices and meansdescribed in thefoll'owing specification. The invention Clearly definedand pointed' out in the aejgc'laims.

A structure which is a preferred embodiment of our invention is 'clearlyillustrated .in the accompanying drawing, forming a part. of. thisspecicatlon, in which: ipumpmainly in Vertical central section,'the

rotorlbei'ng shown in full lines for convenience in illustration.

Fig. II is a detail front view with the outer casing member removed.-

Fig. III is a detail'section on a line corresponding to line 33 of Fig.I.

In the drawing, similar reference characters refer to4 similar partsthroughout the several views. Referring to the drawing, we preferablyprovide a yoke-like frame 1. The arm 2 of the frame 1 is adapted toreceive the supporting hub-like projection 3 of the inner casing member4. This inner casing member is internally cylindrical and is providedwith a tangentially disposed outlet 5, to which the delivery pipe 6 isconnected.

The outer casing member 7 is adapted to fit within the inner casingmember and has an overlapping rim 8 provided With ears 9 for the bolts10 by means of which the outer casing member is detachably secured tothe inner. The outer casin member has an in- Wardly ared axially 'sposedinlet exten-V Specification of Letters Patent. l

1F igure I is a detail view of our improved outlet and ahub-likeprojection'mounted on Patented Jan. 13, 1920.

Application ledJune 2, 1919. Serial No. 301,363.

- sion 11 to which the supply-pipe 12 is secured. The supply pipe 12 ismounted for quick detachment, being provided with a collar or flange 20secured to the inlet exgnsion 11 by means of the flanged coupling 60 Therotor shaft 13 has pulleys 14, one of which is loose .and the otherfixed to the shaft. The rear end of this shaft is mounted in a Ibearing15 carried by the arm 65 16 of the yoke-like, frame. The other endextends through the hub portion 3 of the inner casing member, a bushing17 being provid-T therein,

The rotor comprises a pair of fiat oppositely disposed blades 18 formedintegrally with the hub 19 which projects int'o the inlet extension 11,the bladesv being iared ork widenedA at 20 to extend into the hub,- seeFig. I.

The shaft 13 is providedwith a packing .22 and packing gland 23threadedl upon the v hub-like projection 3 of the casing.

Withthis form and arrangement of parts', the structure may be quickly`assembled and disassembled for use or for cleaning, and, further, thepump may be used for pumping `milk without van objectionable churningac- A tion thereon.

Having thus described our invention, what we claim as new and desiretosecure by, Letters Patent, is:

1. In a rotary pump, the combination of a supporting frame, a casingcomprising an inner member having a tangentially disposed said frame,and an outer member detachably mounted upon theinner, said outer portionbeing provlded with an axiallydisposed inwardly fiared inlet extension,a rotor shaft having a bearing in the said hub portion of said innermember,vand a single pair 0`- oppositely disposed flat rotorblades'provided with va hub mounted on said shaft to roject into saidinlet extension, theblades eing widened at their inner ends to the outerend of the hub.

2. In a rotary pump, the combination of a casing comprising an 4innermember having a peri herally disposed outlet, and an outer mem erdetachably mounted upon the inner, said outer ortion being provided withan axially disposed inwardly ared inlet extension, and a rotor having asingle pair of oppositely disposed at rotor blades `llc provided with' ahub projecting into said '4. In a rotary 'the combination of" inletextension, the blades being widened at a casing'comprising an innermember having15 y their inner ends to lextend into said inlet `aperipherally disposed outlet, and an outer extension. member detachablymounted upon the inner,

3. In arot'ary pump,'the combination of said outer portion 'beingprovided with an fil l a casing having a peripherally disposedoutaxially disposed inlet,. and aV rotor having let, and an axiallydisposed inwardly-flared a single pair of oppositely disposedlatrotor|20o inlet extension, and a rotor having 21,' single'l blades. 1 ypair of oppositely disposed flat rotor blades In Witness whereof, Wehave hereunto set provided with yahub projecting into said our hands.inlet extension, the blades being widened at :their inner. ends to,extend into' Said inlet KARL D. SMITH. i

extension.

BERNARD sAMEnsfoN.`

